Specifications

Glossary
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SIP (single inline package) A DIP-like package
with only one row of leads.
skinny dip Twenty-four-position and 28-
position DIP devices with .300" row-to-row
centerlines.
sleep See suspend.
SLIP (Serial Line Internet Protocol) An
Internet protocol that is used to run the Internet
Protocol (IP) over serial lines, such as telephone cir-
cuits. IP enables a packet to traverse multiple net-
works on the way to its final destination. Largely
replaced by PPP. See also PPP.
slot A physical connector on a motherboard to
hold an expansion card, SIMMs and DIMMs, or a
processor card in place and make contact with the
electrical connections.
Slot 1 The motherboard connector designed by
Intel to accept its SEC cartridge processor design
used by the Pentium II and early Celeron and
Pentium III processors.
Slot 2 A motherboard connector for Pentium II
and Pentium III Xeon processors intended mainly
for file server applications. Slot 2 systems support
up to four-way symmetric multiprocessing.
S.M.A.R.T. (self-monitoring analysis and
reporting technology) An industry standard for
advance reporting of imminent hard drive failure.
When this feature is enabled in the BIOS and a
S.M.A.R.T.-compliant hard drive is installed, detected
problems can be reported to the computer. This
enables the user to replace a drive before it fails.
Programs such as Norton System Works and Norton
Utilities are compatible with these status messages.
SMBIOS A BIOS that incorporates system man-
agement functions and reporting compatibility
with the Desktop Management Interface (DMI).
SMPTE time code An 80-bit standardized edit
time code adopted by SMPTE, the Society of
Motion Picture and Television Engineers. The
SMPTE time code is a standard used to identify
individual video frames in the video-editing
process. SMPTE time code controls such functions
as play, record, rewind, and forward of video tapes.
SMPTE time code displays video in terms of hours,
minutes, seconds, and frames for accurate video
editing.
snow A flurry of bright dots that can appear any-
where onscreen on a monitor.
SO-J (small outline J-lead) A small DIP pack-
age with J-shaped leads for surface mounting or
socketing.
socket A receptacle, usually on a motherboard
although sometimes also found on expansion
cards, into which processors or chips can be
plugged.
Socket 1–8 The Intel specifications for eight dif-
ferent sockets to accept various Intel processors in
the 486, Pentium, and Pentium Pro families.
Socket 370 A 370-pin socket used by socketed
versions of the Celeron and Pentium III and the
VIA C3 processors.
Socket 423 The socket used by the initial ver-
sions of the Pentium 4.
Socket 462 See Socket A.
Socket 478 A 478-pin socket used by the
Northwood versions of the Pentium 4.
Socket 603 A 603-pin socket used by Intel Xeon
processors based on the Pentium 4 design.
Socket 604 A 604-pin socket used by Intel Xeon
processors based on the Pentium 4 design. It is
backward compatible with Socket 603 processors.
Socket 754 A 754-pin socket used by the AMD
Athlon 64 and some versions of the Sempron.
Socket 775 A 775-land socket used by the latest
Intel Pentium 4 processors as well as the Pentium 4
Extreme Edition, Pentium D, and Pentium Extreme
Edition.
Socket 939 A 939-pin socket used by recent ver-
sions of the Athlon 64 FX and all Athlon 64 X2
processors.
Socket 940 A 940-pin socket used by the AMD
Opteron processor and early versions of the Athlon
64 FX processor.
Socket A A 462-pin socket used by socketed ver-
sions of the AMD Athlon; all AMD Athlon MP,
Athlon XP, Duron; and most versions of the AMD
Sempron.
Appendix A
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